VC 14-46 VZ (VZI) #5 w/motor 4VR 132 M4 11 kW 1500 rpm, execution 1

Medium-pressure centrifugal fan of the VC 14-46 VZ (VZI) #5 w/motor 4VR 132 M4 11 kW 1500 rpm series (VR-287-46.1), made of dissimilar materials for explosive environments, features brass pads in friction areas.

The fan VC 14-46 VZ (VZI) #5 (VR-287-46.1) is intended for ventilation or air conditioning systems for explosive gas-air mixtures of the 1st and 2nd categories, groups T1, T2, T3 according to the classification of "Electrical Installation Rules" (EIR), which do not cause accelerated corrosion of the flow part materials (air aggressiveness up to 80 °C), and do not contain fibrous materials, sticky substances, dust, or other solid impurities in quantities not exceeding 100 mg/m³ under moderate (U) climate conditions (placement category 3) and tropical (T) climate (placement category 2).

The ambient temperature should be within -40°C to +40°C (+40°C when equipped with tropical electric motors). The casing and impeller blades of explosion-proof fans are made from paired materials (steel-brass or steel-aluminum), which are not hazardous in terms of ignition by friction sparks.

This model is an analogue of medium-pressure centrifugal fans VR-287-46.1, VR 320-46, VR-300-46, VR 300-45, VR 289-46, VR 15-45.

The centrifugal fan VC 14-46 VZ (VZI) #5 (VR-287-46.1) consists of the following units, which can be purchased separately:

• fan VC 14-46 VZ (VZI) #5 (VR-287-46.1) without electric motor
• impeller of the fan VC 14-46 VZ (VZI) #5 (VR-287-46.1)
• casing (housing) of the fan VC 14-46 VZ (VZI) #5 (VR-287-46.1)
• Electric motor 4VR 132 M4

General information about centrifugal fans VC 14-46 VZ (VZI) #5 w/motor 4VR 132 M4 11 kW 1500 rpm (VR-287-46.1):

• Medium pressure
• Single-sided suction
• Rotatable spiral casing
• Forward-curved blades
• Number of blades: 32 pcs.
• Direction of rotation: right and left
• Material: dissimilar metals.

Purpose of centrifugal fans VC 14-46 VZ (VZI) #5 w/motor 4VR 132 M4 11 kW 1500 rpm (VR-287-46.1) made of dissimilar materials:

The centrifugal fan VC 14-46 VZ (VZI) #5 w/motor 4VR 132 M4 11 kW 1500 rpm is intended for ventilation or air conditioning systems of explosive gas-air mixtures of the 1st and 2nd categories, groups T1, T2, T3 according to the classification of "Electrical Installation Rules" (EIR), which do not cause accelerated corrosion of the flow part materials (air aggressiveness up to 80 °C), and do not contain fibrous materials, sticky substances, dust, or other solid impurities in quantities not exceeding 100 mg/m³ under moderate (U) climate conditions (placement category 3) and tropical (T) climate (placement category 2). The ambient temperature should be within -40°C to +40°C (+40°C when equipped with tropical electric motors).

Centrifugal fans VC 14-46 VZ (VZI) #5 w/motor 4VR 132 M4 11 kW 1500 rpm (VR-287-46.1) are used in:

• air conditioning systems
• ventilation systems
• air heating systems
• other sanitary and industrial purposes

Operating principle of the centrifugal fan VC 14-46 VZ (VZI) #5 w/motor 4VR 132 M4 11 kW 1500 rpm (VR-287-46.1) made of dissimilar materials:

Air, receiving energy from the impeller blades, enters the fan under the influence of centrifugal force at a 90-degree angle and moves radially into the spiral casing; inside the casing, moving along the spiral-shaped housing, under pressure, it is directed through the fan outlet.

Completeness of the centrifugal fan VC 14-46 VZ (VZI) #5 w/motor 4VR 132 M4 11 kW 1500 rpm (VR-287-46.1):

• spiral casing,
• impeller,
• frame,
• collector,
• Electric motor 4VR 132 M4

The impeller consists of front and rear discs, 32 sheet blades, and a hub. The fan frame is welded. The base has a hole for installation on vibration isolators or a foundation. The electric motor and cover are mounted on the frame. The conical collector for supplying air to the impeller is fixed to the inlet pipe. The overlap between the collector and the front disc of the impeller is adjusted by axial movement of the collector in the inlet pipe.

Position of the casings of radial fans with right (PR) and left (LIV) rotation, view from the suction opening: